siemens makes multi segment photodiodes
marcel
amsterdam

Jon Petty wrote:

> Hi
>
> I want to use a laser or led as a light source and some kind of a diode array
> receptor to measure the critical angle of refraction for a automotive fluid.
> The measurement device will be a small handheld unit and I need to keep
> pricing low ($250 retail). The device should be able to test different types
> of fluid with different angles of refraction and the software will be used to
> allow that use.
>
> Any ideas ?
> Does anyone know of an inexpensive diode array receptor or way to measure
> where light is received?
>
> Is there any kind of a light potentiometer that reads the position of a beam
> of light and output the result?
>
> Maybe another less expensive method?
>
> Thanks
>
> Jon